package com.nowcoder.community.controller;

import com.google.code.kaptcha.Producer;
import com.nowcoder.community.dao.UserMapper;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.utils.CommunityUtil;
import com.nowcoder.community.utils.RedisKeyUtil;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.imageio.ImageIO;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.TimeUnit;

import static com.nowcoder.community.utils.CommunityConstant.DEFAULT_EXPIRED_SECONDS;
import static com.nowcoder.community.utils.CommunityConstant.REMEMBER_EXPIRED_SECONDS;

@Controller
@RequestMapping("/user")
public class LoginController {

    private Logger logger= LoggerFactory.getLogger(LoginController.class);
    @Autowired
    private UserService userService;

    @RequestMapping("/toRegister")
    public String toregister() {
        return "site/register";
    }


    @PostMapping("/register")
    public String register(Model model, User user) {


        Map<String, Object> map = userService.register(user);
        if (map == null || map.isEmpty()) {
            model.addAttribute("msg", "你已经注册成功了，我们已经向你的邮箱发送一封邮件了，请尽快前往激活账号");
            model.addAttribute("target", "/index");
            return "site/operate-result";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            model.addAttribute("emailMsg", map.get("emailMsg"));
           // model.addAttribute("confirmPwdMsg", map.get("confirmPwdMsg"));
            return "site/register";
        }
    }


    @RequestMapping("/activation/{id}/{code}")
    public String activation(@PathVariable("id") int id,@PathVariable("code") String code,Model model){
        int activation = userService.activation(id, code);
        if (activation == 0) {
            model.addAttribute("msg","激活成功，您的账号已经激活成功,可以正常使用了!");
            model.addAttribute("target","/user/toLogin");

        }else if(activation==1){
            model.addAttribute("msg","你已经激活过了，快去使用吧!");
            model.addAttribute("target","/index");
        }else{
            model.addAttribute("msg","激活失败，请联系管理员!");
            model.addAttribute("target","/index");
        }

        return "site/operate-result";
    }

    @RequestMapping("/toLogin")
    public String toLogin(){
        return "site/login";
    }

@Autowired
private RedisTemplate redisTemplate;
    @Autowired
    private Producer kaptcha;
    @GetMapping("/kaptcha")
    public void getKaptcha(HttpServletResponse response, HttpSession session){
        String text = kaptcha.createText();
        BufferedImage image = kaptcha.createImage(text);

        // 将验证码存入session
       // session.setAttribute("kaptcha", text);
        // 验证码的归属
        String kaptchaOwner = CommunityUtil.generateUUID();
        Cookie cookie = new Cookie("kaptchaOwner", kaptchaOwner);
        cookie.setMaxAge(60);
        cookie.setPath(contextPath);
        response.addCookie(cookie);
        // 将验证码存入Redis
        String redisKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
        redisTemplate.opsForValue().set(redisKey, text, 60, TimeUnit.SECONDS);

        // 将突图片输出给浏览器
        response.setContentType("image/png");
        try {
            OutputStream os = response.getOutputStream();
            ImageIO.write(image, "png", os);
        } catch (IOException e) {
            logger.error("响应验证码失败:" + e.getMessage());
        }
    }

@Value("${server.servlet.context-path}")
private String contextPath;
    //登录功能
    @RequestMapping(path = "/login", method = RequestMethod.POST)
    public String login(String username, String password, String code, boolean rememberme,
                        Model model, HttpServletResponse response,@CookieValue("kaptchaOwner") String kaptchaOwner) {
        // 检查验证码
       // String kaptcha = (String) session.getAttribute("kaptcha");
        String kaptcha = null;
        if (StringUtils.isNotBlank(kaptchaOwner)) {
            String redisKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
            kaptcha = (String) redisTemplate.opsForValue().get(redisKey);
        }
        if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code) || !kaptcha.equalsIgnoreCase(code)) {
            model.addAttribute("codeMsg", "验证码不正确!");
            return "/site/login";
        }

        // 检查账号,密码
        int expiredSeconds = rememberme ? REMEMBER_EXPIRED_SECONDS : DEFAULT_EXPIRED_SECONDS;

        Map<String, Object> map = userService.login(username, password, expiredSeconds);
        if (map.containsKey("ticket")) {
            Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
            cookie.setPath(contextPath);
            cookie.setMaxAge(expiredSeconds);
            response.addCookie(cookie);
            return "redirect:/index";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            return "/site/login";
        }
    }

    @RequestMapping(path = "/logout", method = RequestMethod.GET)
    public String logout(@CookieValue("ticket") String ticket) {
        userService.logout(ticket);
        return "redirect:/user/toLogin";
    }


}
